Frame for packing-boxes.



L. S. LAGHMAN.

FRAME FOR PACKING BOXES. APPLICATION FiILED OUT. 21, 1908.

1,044,667. Patented Nm 19,1912;

Figs. and 6 are detail viewsof alternate UNITED STATES PATENT OFFICE.

LAURENCE S. LAC HMAN, OF NEW YORK, N. Y., ASSIGNO'F," T0 UNIVERS AL ELECTRIC WELDINOI' COMPANY, OF NEW YORK, N. Y., '.A CORPORATION OF NEW YORK.

FRAME ro'n- PACKING-BOXES.

Specification of fetfers Patent.

Patented Na. 19, 1912.

Application filed October 21, 1908. Serial No. 458,898.

To all whomit may concern: v Be it known that ITLAURENGE S. LACH- MAN, a citizen of the United States, anda resident of the cityof New,

specification.

for

' packingboxeawhich comprises a series of I ridged longitudinal sheet metal members.

' means for stiffening the frame work.

united at intervals, to a series of ridged of electric welding, said members being provided with means which permit of the same being electrically welded, and also with The objects of the invention are" to provide a metal frame which is verylight and strong, and which can be made from thin strips of sheet metal which are easily ridged,

so as to afford means for electric welding the same together, and to afford great stiffness and strength to the completed frame.

Further objects of the invention are'to construct a metal frame, which may be covered with suitable material, and secured to the edges of the framework of a box for the sides of the same, which will be of great strength when so constructed.

In the drawings: Figure 1 represents a portion of the metal frame one side of which is covered with material such as cardboard or canvas; Fig; 2 is atop ,view of Fig. 1; Fig. 3 is a detail view in cross section on the line 3-3 of Fig. 1; Fig. 4-. is a perspective view of a box partly covered with my improved frame covered with cardboard or canvas which is broken away;

forms of frame.

Referring to'the drawings, A designates the longitudinal members of the frame and B designates the transverse members of the frame, "both the longitudinal members A and the transverse members B being suitably -ridged with one or more ridgesC .wh1ch are placed face to face so that the ridges of the respective members cross each other. The ridges G projeet'above the surface of the adjacent metal of the member and correspond approximately .in cross-sec tional area to that of the ridges C on the '55 other member, so that when an electric :cur- I York, county: of New York, and- State of New York, have invented certainnew and useful Frames for Packing-Boxes, of which the following is a rent is passed through the metal members at the intersection of the ridges, and the same are forced together" in any desired manner, the metal at the points of contact will bef-heated to the welding temperature,

after which the same are forced together until-the metal of thridges adjacent to the point or points of' welded union meets and contacts with the flat surface of the opposite member so as to' short circuit the welding current by affording a larger path foatlie passage of the current thereby reducing the efi'ectiveweldlng-heat of the current. I

The. members Aand B are usually con: structed of sheet metal suitably pressed to ridges C are forced up out of{the metal as shown in Fig. 2, or whethenthe metal is rolled to produce a solid ridge.

As shown in Fig. 1, the members A and B are each provided 'with two ridges C which arewelded at their. intersection to produce four spot welds, which makesa ve'ryrigid joint of great strength. It is also to be noted that the ridges C are preferably made continuous so as to suitably stiflen the members A and B to make a rigid frame.

Instead of providing both members A and B with two ridges C, as shown in Fig. 1, the same may be constructedas shown in Fig. 5 in-which the member B has only one ridge 0 whereas the member A has two ridges C making two welds at the intersection of the members A and B. In. Fig.6 are shown the members i and B each provided with only one rib C male ing only one weld at the intersection of the members'A and B.

It is obvious that as desired any number of ridges C may be provided on themembers A and B but it is important that if more than one ridge is used the same should be suitably spaced apart so as to facilitate the welding current being short circuited when the members are forced together and also to facilitate the ridges being brought to the proper welding-temperature. It is also obvious that the ridges C are not necessarily made continuous, and can just as Well be provided only where the members and B cross, the remaining port1on of theridges being of no advantage in welding the parts together, but of considerable form the ridges C, although if desiredthe ridges C. may made in any other suitable manner, it being immaterial whether the gether as the angle may be varied to suit v difierentconditions for; which the members are used.

a A frame as above described can be used for a great variety of purposes, being constructed of different weights of different meshes to meet the the same metal and of, different requirements.

A frame constructedas shown in Fig. 1 is very useful. for making packing boxes as shown in Fig. 4 in which the edges of the box are preferably made of strips of wood D- suitably secured together at the corners. To complete the box a metal frame similar to that shown in Fig. 1, is nailed to the strips D, the metal of the frame being of sheet metal which is readily punctured y a nail, and which-readily permits of the same being cut by shears 'to fit the box, which when completed is very strong and rigid and can be made so as to cost far less than a box. constructed entirely of wood with anywhere near the strength of the box constructed as shown in Fig. at.

In order to close the perforations or meshes of the frame the same is preferably covered with cardboard or other. material such' as canvas, which can be secured to one or both sides of the frame in any desired manner. If canvas is used the same can be made. watertight by varnish or paint.

\Vhile the invention with particular reference to a packing box, the same is not intended to be limited thereto, as the frame can be used simply as a partition or for any purpose to which the same is applicable.

W'hat I claim is r A sheet metal frame comprising a series of ridged crossed sheet metal members each member ridged in one direction only, the ridges of said members arranged transversely respectively and welded together where said ridges cross each other, the cross sectional area of the ridges being approximately equal near such points of welded union, and the outer edges of the ridges of each such member being in contact with but not welded to the surfaces of the adjacent member near the point of welded union.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

LAURENCE s. LACHMAN.

Witnesses LEO J. Marry, FRANK E. RAFFMAN.

Copies of thispatent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

has been described 

